Holder for electric-arc lamps



(No Model.)

J. PAWLOWSKL HOLDER FOR ELECTRIC ARC LAMPS.

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JACOB PAW'LOlVSKI, OF CINCINNATI, OI-IIO.

HOLDER FOR ELECTRIC-ARC LAMPS.

SPECIFICATION forming part of Letters Patent No. 428,942, dated May 27,1890. Application filed September '7, 1889. Serial No. 823,289. (Nomodel.)

To all whom, it may concern:

Be it known that I, JACOB PAWLOWSKI, a citizen of the United States, anda resident of Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvementsin Holders forElectric- Arc Lamps, of which the following is a specification.

My invention relates to holders for electricarc lamps. Its object is toprovide a holder which acts automatically to cut out the lamp should itbe dislodged or removed for any purpose, and also a cut-out to beoperated by hand to cut out the lamp temporarily while being trimmed, orwhen the use of any lamp or set of lamps in the circuit is not required.

In my patent, No. 395,755, of January 8, 1889, the holder is for lampswhich are suspended from their poles.

The present invention is for lamps which are suspended from the hood,the covering, or any part of the lamp-frame.

111 the accompanying drawings, Figure 1 is a side elevation of a holdercontaining my invention. Fig. 2 is an inverted plan view of the same.

Referring to the parts, A is the board, preferably made of wood. It maybe of any convenient shape. It has a rain-groove a extending around itsunder side to prevent any water that may drip over the edge of the boardreaching the part inclosed by the groove, to which part the metallicparts are secured. Near each end of the board are secured metallicplates B B. These are transversely grooved across their faces to seatthe circuitwires C C, which are held in place by similarly-grooved capsb I). These holders B b B b are in electric connection with thecircuit-wires, being, in fact, binding posts or plates.

To the plate B is secured one end of the spring-arm D. The opposite freeend of the arm extends through astaple E to overlap the opposite plateB, against which it is normally held, as shown in dotted line, Fig. 1.This spring-arm has a downward bend d, from which the lamp G issuspended by the insulating-cord g. The legs of staple E pass tightlythrough a metal plate e and up through board A, over the top of whichthe ends of the legs are clinched, as seen in Fig. 1. Now, it will beseen that when the lamp is in position, as indicated in Fig. 1, the armD is pulled down by its weight against the staple E. I11 this positionthe circuit is through the lamp; but should any lamp in the circuit beremoved or dislodged, so soon as its weight is removed from the arm Dthe arm will spring up against plate 13, and thus cut the lamp out, thatlamp leaving the circuit closed through the others.

The binding-plate I for the negative wire C has an extension upon oneside, upon which is pivoted one end of an arm II, which is pro videdwith an insulated handle h. This arm II is preferably made of springmetal, so that its free end will press with some force upon the board Awhen in the position shown in Fig. 2, to retain it in such position, andwhen thrown over the plate 6, as seen in Fig. 1, it will press firmlyupon it to insure perfect electrical contact. The purpose of this handoutout is to enable the trimmer to cut the lamp out of the circuit, andthus'avoid danger while trimming or fixing any lamp nceding attention.

I have shown and described what I believe to be the simplest form of myinvention; but it is obvious that various modifications in the detailsof construction may be made without departing from the principle of myinvention, and I therefore do not wish to be understood as limitingmyself strictly to the precise details hereinbefore described, and shownin the drawings.

I claim-- 1. In a holder for electric-arc lamps, the combination of theboard A, binding posts or holders for the circuit-wires, which pass fromsaid holders to the lamp secured at opposite ends of said board, and thelamp-holdin g arm secured at one end to one of said circuit-wireholders, extending over and normally pressed against the oppositewire-holder, and adapted to be drawn from said holder by the weight ofthe lamp, whereby the circuit is maintained should the lamp bedislodged.

2. The combination, substantially as specified, of the board A,circuit-wire holders at each end of said board for the wires which leadto the lamp, a lamp holding arm secured to one of said Wire-holders andnormally springpressed against the opposite holder, and a keeper securedto the board A, through which said lampholding' arm passes to assist insustaining the weight of the lamp when suspended from said arm.

3. The combination of board A, holders for the circuit-wires arranged ateach end thereof, a lamp-ho1ding arm secured to one of said holders andnormally held in contact with the opposite holder, a metallic supportfor said holder, when drawn down arranged between said holders, and acut-out having one end held in electric connection with one of saidwire-holders and adapted to be thrown into or out of connection withsaid arm-support, whereby the lamp ma be instantly thrown in or out ofcircuit, substantially as shown and described.

4. The combination, substantially as specified, of the board A, theholders 1- bl) b at each end thereof, the circuit-wires C C, held inelectric connection with said holders, the spring-arml), having bend (Zto hold the lamp, the metallic lceeperE, through which the arm T)passes, and by which said arm is supported when the lamp is in position,and the arm H, in electric connection with one of the wireholders andadapted to be thrown into and out of electrical connection with keeperE.

JACOB PA\VLO\VSKI.

Witnesses:

FRANK Ii. l\[ILL\VARD, GEo. J. MURRAY.

